
SOME/IP Service Discovery Protocol Specification
AUTOSAR FO R22-11
Abbreviation / Acronym: Description:
Requiring a service instance
to send a SOME/IP-SD message to the ECU implementing the
required service instance with the meaning that this service in-
stance is needed by the other ECU. This may be also sent if the
service instance is not running; thus, was not offered yet.
Releasing a service instance
to sent a SOME/IP-SD message to the ECU hosting this service
instances with the meaning that the service instance is no longer
needed.
Server-Service-Instance-Entry
The configuration and required data of a service instance the
local ECU offers, is called Server-Service-Instance-Entry at the
ECU offering this service (Server).
Client-Service-Instance-Entry
The configuration and required data of a service instance another
ECU offers, is called Client-Service-Instance-Entry at the ECU
using this service (Client)
Publishing an eventgroup
to offer an eventgroup of a service instance to other ECUs using
a SOME/IP-SD message
Subscribing an eventgroup
to require an eventgroup of a service instance using a SOME/IP-
SD message.
unicast event
Events which are transmitted to a unicast endpoint by the ECU
which hosts a server service. The unicast endpoint is provided by
a particular client service which has subscribed to this server ser-
vice within the Endpoint Option referenced by a SubscribeEvent-
group entry (see client service unicast endpoint).
multicast event
Events which are transmitted to a multicast endpoint by the ECU
which hosts a server service. A multicast endpoint could be pro-
vided by the server service (see server service multicast end-
point) and client service (see client service multicast endpoint).
server service multicast end-
point
Multicast endpoint (including IP multicast address, port, and pro-
tocol) provided by the server service to announce where the
server service transmits multicast-events to with respect to the
configured MULTICAST_THRESHOLD.
client service unicast endpoint
Unicast endpoint (including IP multicast address, port, and pro-
tocol) provided by the client service to announce where the client
service expects to receive events from the corresponding server
service. Please note, if the MULTICAST_THRESHOLD has been
exceeded on server service side, then the server ser vice auto-
matically switches from the client service unicast endpoint to the
server service multicast endpoint to provide events.
client service multicast endpoint
Multicast endpoint (including IP multicast address, port, and pro-
tocol) provided by the client service to announce where the client
service expects to receive events from the corresponding server
service. This could be used alternatively to a client unicast end-
point. Please note, if the MULTICAST_THRESHOLD has been
exceeded on server service side, then the server ser vice auto-
matically switches from the client service multicast endpoint to
the server service multicast endpoint.
Security Association
Mechanism to provide secure encr ypted communication between
communication partners. This for example applies to IPSec,
MACsec, (d)TLS and possible other security protocols.
Secured Port
Network Port, on which a Security association is applied to be
secured from unauthorized communication.
Table 4.1: Acronyms and Abbreviations
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